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- Title
Digestibility of nutrients in piglets fed diets with isolated or concentrate soy protein.
- Authors
Aguilera Barreiro, Maria De Los Angeles; Reis De Souza, Tércia Cesária; Mariscal Landín, Gerardo; Borbolla Sosa, Arturo Germán; Aguilera Barreyro, Araceli
- Abstract
Fifteen piglets weaned at 17 d of age and weighing 6.1 ± 1.8 kg were used to determine the effect of protein source on nutrient digestibility of three diets; one with soy protein concentrated (SPC), another with soy protein isolated alone (SPI) and the third with SPI plus dried whey (SPIDW). Apparent ileal (AID) and total digestibility (ATD) of dry matter (DM), crude protein (CP) and energy (En) were evaluated in three periods (P): P1= 26-29; P2= 33-36 and P3= 40-43 d. DM AID of SPI were higher (P<0.01) than SPIDW and SPC (84.2 vs 82.8, 79.3 %). CP AID of diets SPI and SPIDW were higher (P<0.01) than SPC (80.1, 80.4 vs 76.4 %). En AID of SPI were higher (P<0.01) than others diets and SPC and SPIDW were practically similar (86.9 vs 81.6 and 83.9 %). DM AID increased (P<0.05) in P2 and did not differ between P2 and P3 (79.9 vs 83.1 and 83.4 %). A similar effect was observed in energy (82.4 vs 84.4, 85.7 %). CP AID showed the best values for SPC and SPIDW in P3 (P<0.01). Apparent total digestibility of DM, CP and En were higher in SPI fed piglets than in SPC (91.3, 89.9, 92.6 vs 86.8, 80.4, 87.8 %). SPI had a higher DM ATD than SPIDW (91.3 vs 88.9 %). SPC and SPIDW had a similar ATD, except to crude protein. DM ATD, CP ATD and En ATD increased (P<0.01) between P1 and P2. The protein sources studied were very digestible.
- Subjects
PIGLETS; SOY proteins; ANIMAL nutrition; PROTEINS; SOYBEAN products
- Publication
Técnica Pecuaria en México, 2006, Vol 44, Issue 3, p301
- ISSN
0040-1889
- Publication type
Article